Launcher Log:
11:48:43.282
launcher
main
Preparing to launch minecraft client for 1.15.2
11:48:43.715
launcher
main
Checking installations.
11:48:43.715
launcher
main
Minecraft client 1.15.2 is ready to start.
11:48:43.715
launcher
main
Starting!
11:48:44.162
launcher
main
Using default game log configuration client-1.12.xml (outputs XML)
11:48:45.041
dbn
Render thread
Setting user: holoGEI
11:48:46.810
dbn
Render thread
Backend library: LWJGL version 3.2.2 build 10
11:49:17.833
com.mojang.text2speech.NarratorWindows
Render thread
Narrator library for x64 successfully loaded
11:49:17.879
zg
Render thread
Reloading ResourceManager: Default, Dark Theme.zip, Halcyon Days (sky and lighting).zip, [American] Minecraft 1.12 Dark GUI Theme Resource Pack v1.0.2.zip
11:49:19.279
cwt
Render thread
OpenAL initialized.
11:49:19.280
edw
Render thread
Sound engine started
11:49:19.369
eai
Render thread
Created: 1024x1024x0 minecraft:textures/atlas/blocks.png-atlas
11:49:19.390
eai
Render thread
Created: 256x128x0 minecraft:textures/atlas/signs.png-atlas
11:49:19.390
eai
Render thread
Created: 1024x512x0 minecraft:textures/atlas/banner_patterns.png-atlas
11:49:19.390
eai
Render thread
Created: 1024x512x0 minecraft:textures/atlas/shield_patterns.png-atlas
11:49:19.391
eai
Render thread
Created: 256x256x0 minecraft:textures/atlas/chest.png-atlas
11:49:19.391
eai
Render thread
Created: 512x256x0 minecraft:textures/atlas/beds.png-atlas
11:49:19.391
eai
Render thread
Created: 512x256x0 minecraft:textures/atlas/shulker_boxes.png-atlas
11:49:19.724
eai
Render thread
Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas
11:49:19.725
eai
Render thread
Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas
11:49:19.726
eai
Render thread
Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas
11:49:43.326
launcher
main
11:49:43.326
monitor
Process Monitor
Process crashed with exit code -805306369
Windows 10 19041 is the release build of Windows 10 Version 2004 (May 2020 Update) and is the latest version of Windows currently available.
The launcher log doesn't reveal much about the cause of the issue. The game just stops responding when keyboards re-connect.